From: walter harms <wharms@bfs.de>
To: Cyril Roelandt <tipecaml@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
gregkh@linuxfoundation.org, balbi@ti.com,
laurent.pinchart@ideasonboard.com,
kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] UVC: use GFP_ATOMIC under spin lock.
Date: Thu, 22 Nov 2012 08:09:57 +0000 [thread overview]
Message-ID: <50ADDDD5.1080709@bfs.de> (raw)
In-Reply-To: <1353360842-18384-1-git-send-email-tipecaml@gmail.com>
Am 19.11.2012 22:34, schrieb Cyril Roelandt:
> Found using the following semantic patch:
> <spml>
> @@
> @@
> spin_lock_irqsave(...);
> ... when != spin_unlock_irqrestore(...);
> * GFP_KERNEL
> </spml>
>
> Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
> ---
> drivers/usb/gadget/uvc_video.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
> index b0e53a8..79b4132 100644
> --- a/drivers/usb/gadget/uvc_video.c
> +++ b/drivers/usb/gadget/uvc_video.c
> @@ -309,7 +309,7 @@ uvc_video_pump(struct uvc_video *video)
> video->encode(req, video, buf);
>
> /* Queue the USB request */
> - if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
> + if ((ret = usb_ep_queue(video->ep, req, GFP_ATOMIC)) < 0) {
> printk(KERN_INFO "Failed to queue request (%d)\n", ret);
> usb_ep_set_halt(video->ep);
> spin_unlock_irqrestore(&video->queue.irqlock, flags);
IMHO, this should be two lines, aka:
ret = usb_ep_queue(video->ep, req, GFP_KERNEL);
if (ret<0)
just my two cents,
re,
wh
WARNING: multiple messages have this Message-ID (diff)
From: walter harms <wharms@bfs.de>
To: Cyril Roelandt <tipecaml@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
gregkh@linuxfoundation.org, balbi@ti.com,
laurent.pinchart@ideasonboard.com,
kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] UVC: use GFP_ATOMIC under spin lock.
Date: Thu, 22 Nov 2012 09:09:57 +0100 [thread overview]
Message-ID: <50ADDDD5.1080709@bfs.de> (raw)
In-Reply-To: <1353360842-18384-1-git-send-email-tipecaml@gmail.com>
Am 19.11.2012 22:34, schrieb Cyril Roelandt:
> Found using the following semantic patch:
> <spml>
> @@
> @@
> spin_lock_irqsave(...);
> ... when != spin_unlock_irqrestore(...);
> * GFP_KERNEL
> </spml>
>
> Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
> ---
> drivers/usb/gadget/uvc_video.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
> index b0e53a8..79b4132 100644
> --- a/drivers/usb/gadget/uvc_video.c
> +++ b/drivers/usb/gadget/uvc_video.c
> @@ -309,7 +309,7 @@ uvc_video_pump(struct uvc_video *video)
> video->encode(req, video, buf);
>
> /* Queue the USB request */
> - if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
> + if ((ret = usb_ep_queue(video->ep, req, GFP_ATOMIC)) < 0) {
> printk(KERN_INFO "Failed to queue request (%d)\n", ret);
> usb_ep_set_halt(video->ep);
> spin_unlock_irqrestore(&video->queue.irqlock, flags);
IMHO, this should be two lines, aka:
ret = usb_ep_queue(video->ep, req, GFP_KERNEL);
if (ret<0)
just my two cents,
re,
wh
next prev parent reply other threads:[~2012-11-22 8:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-19 21:34 [PATCH] UVC: use GFP_ATOMIC under spin lock Cyril Roelandt
2012-11-19 21:34 ` Cyril Roelandt
2012-11-22 8:09 ` walter harms [this message]
2012-11-22 8:09 ` walter harms
2012-11-22 12:22 ` Felipe Balbi
2012-11-22 12:22 ` Felipe Balbi
2012-11-22 12:38 ` Laurent Pinchart
2012-11-22 12:38 ` Laurent Pinchart
2012-11-25 1:58 ` [PATCH v2] " Cyril Roelandt
2012-11-25 1:58 ` Cyril Roelandt
2012-11-27 13:14 ` Laurent Pinchart
2012-11-27 13:14 ` Laurent Pinchart
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